Full text search in PostgreSQL 8.4

Hello,

I recently upgraded to version 8.4 and now full text search with russian configuration is not working:

template1=# create database test encoding='win1251';
test=# create table test ("test" varchar(255));
test=# insert into test values ('тест');
test=# select * from test where to_tsvector('russian', test) @@ to_tsquery('russian', 'тест');

In 8.3 version I have result:
test
------
тест
(1 запись)

In 8.4 I have this notice and 0 rows with any table values:
NOTICE: text-search query contains only stop words or doesn't contain lexemes, ignored
test
------
(0 rows)

Why it may not working in 8.4 version?

Thanks